Free SMS for Big Groups.
Zero per-text bills.
Stop paying cents per SMS. ZilchSMS gives your community, club, team, or organization free group text messaging. Manage opt-in compliance, broadcast announcements, or run two-way community chats without vendor fees.
Free Group Texting, Built for Large Groups
Everything you need to keep large groups connected without per-message vendor fees or expensive monthly subscriptions.
Dedicated Group Handle
Your group gets its own unique address (like [email protected]).
Members can simply send a text to it from their phones to automatically join the group.
- Instant Member Signup: Anyone texts your group handle to request access.
- Admin Notifications: You get notified immediately whenever someone joins.
- No App Required: Group members receive and send standard SMS texts.
Opt-In Confirmation & Safety
Keep your group spam-free and fully compliant. Everyone can be added, but members confirm with a quick text to stay opted-in.
- Double Opt-In: New members receive an invite and reply YES to confirm.
- Online Dashboard Control: See all subscribers online, add, or remove anyone with one click.
- Account Security: 3-attempt lockout protection with SMS verification unlock.
Two Group Models for Every Community
Select the group model that fits your organization during setup. You can always change it later in your dashboard.
1. Open Group
Everyone can participate. Any confirmed member who sends a message to your group email has their text instantly relayed to every other subscriber in the group.
- Peer-to-Peer Relay: Members text the group email and all members receive it as SMS.
- No App Required: Works entirely over native SMS on any phone.
- Admin Moderation Controls: Admin can remove members or pause the group at any time.
2. Broadcast Group
One-way announcement channel with built-in moderation. Only the admin can broadcast directly. If any member sends in a message, it routes to the admin for approval first.
- Direct Announcements: Admin sends blasts to all subscribers with zero noise.
- Reply "1" to Approve: When a member texts in, admin gets alerted and can reply 1 to blast it out to the entire group.
- Edit Before Sending: Admin can modify or rewrite member messages in the dashboard before broadcasting.
Test the Inbound Relay Live
Simulate a member texting your group address ([email protected]). See how the system manages opt-in, relays messages, or queues approvals.